"""
Configuration and data structures for diffusion performance tests.

Usage:

pytest python/sglang/multimodal_gen/test/server/test_server_1_gpu.py
# for a single testcase, look for the name of the testcase in ONE_GPU_CASES,
# ONE_GPU_MODELOPT_FP8_CASES, ONE_GPU_B200_CASES, or TWO_GPU_CASES
pytest python/sglang/multimodal_gen/test/server/test_server_1_gpu.py -k qwen_image_t2i


To add a new testcase:
1. add your testcase with case-id: `my_new_test_case_id` to `ONE_GPU_CASES`, `ONE_GPU_MODELOPT_FP8_CASES`, `ONE_GPU_B200_CASES`, or `TWO_GPU_CASES`
2. run `SGLANG_GEN_BASELINE=1 pytest -s python/sglang/multimodal_gen/test/server/ -k my_new_test_case_id`
3. insert or override the corresponding scenario in the platform JSON under `perf_baselines/`


"""

from __future__ import annotations

import json
import os
import shlex
import statistics
from dataclasses import dataclass, field, replace
from functools import lru_cache
from pathlib import Path
from typing import Any, Sequence

from sglang.multimodal_gen.configs.pipeline_configs.base import ModelTaskType
from sglang.multimodal_gen.registry import (
    get_model_info,
    get_pipeline_config_classes,
)
from sglang.multimodal_gen.runtime.platforms import current_platform
from sglang.multimodal_gen.runtime.utils.perf_logger import RequestPerfRecord


@dataclass
class ToleranceConfig:
    """Tolerance ratios for performance validation."""

    e2e: float
    denoise_stage: float
    non_denoise_stage: float
    denoise_step: float
    denoise_agg: float

    @classmethod
    def load_profile(cls, all_tolerances: dict, profile_name: str) -> ToleranceConfig:
        """Load a specific tolerance profile from a dictionary of profiles."""
        # Support both flat structure (backward compatibility) and profiled structure
        if "e2e" in all_tolerances and not isinstance(all_tolerances["e2e"], dict):
            tol_data = all_tolerances
            actual_profile = "legacy/flat"
        else:
            tol_data = all_tolerances.get(
                profile_name, all_tolerances.get("pr_test", {})
            )
            actual_profile = (
                profile_name if profile_name in all_tolerances else "pr_test"
            )

        if not tol_data:
            raise ValueError(
                f"No tolerance profile found for '{profile_name}' and no default 'pr_test' profile exists."
            )

        print(f"--- Performance Tolerance Profile: {actual_profile} ---")

        return cls(
            e2e=float(os.getenv("SGLANG_E2E_TOLERANCE", tol_data["e2e"])),
            denoise_stage=float(
                os.getenv("SGLANG_STAGE_TIME_TOLERANCE", tol_data["denoise_stage"])
            ),
            non_denoise_stage=float(
                os.getenv(
                    "SGLANG_NON_DENOISE_STAGE_TIME_TOLERANCE",
                    tol_data["non_denoise_stage"],
                )
            ),
            denoise_step=float(
                os.getenv("SGLANG_DENOISE_STEP_TOLERANCE", tol_data["denoise_step"])
            ),
            denoise_agg=float(
                os.getenv("SGLANG_DENOISE_AGG_TOLERANCE", tol_data["denoise_agg"])
            ),
        )


@dataclass
class ScenarioConfig:
    """Expected performance metrics for a test scenario."""

    stages_ms: dict[str, float]
    denoise_step_ms: dict[int, float]
    expected_e2e_ms: float
    expected_avg_denoise_ms: float
    expected_median_denoise_ms: float
    estimated_full_test_time_s: float | None = None


@dataclass
class BaselineConfig:
    """Full baseline configuration."""

    scenarios: dict[str, ScenarioConfig]
    step_fractions: Sequence[float]
    tolerances: ToleranceConfig
    improvement_threshold: float

    @classmethod
    def load(cls, path: Path) -> BaselineConfig:
        """Load baseline configuration from JSON file."""
        with path.open("r", encoding="utf-8") as fh:
            data = json.load(fh)

        # Get tolerance profile, defaulting to 'pr_test'
        profile_name = "pr_test"
        tolerances = ToleranceConfig.load_profile(
            data.get("tolerances", {}), profile_name
        )

        scenarios = {}
        for name, cfg in data["scenarios"].items():
            scenarios[name] = ScenarioConfig(
                stages_ms=cfg["stages_ms"],
                denoise_step_ms={int(k): v for k, v in cfg["denoise_step_ms"].items()},
                expected_e2e_ms=float(cfg["expected_e2e_ms"]),
                expected_avg_denoise_ms=float(cfg["expected_avg_denoise_ms"]),
                expected_median_denoise_ms=float(cfg["expected_median_denoise_ms"]),
                estimated_full_test_time_s=cfg.get("estimated_full_test_time_s"),
            )

        return cls(
            scenarios=scenarios,
            step_fractions=tuple(data["sampling"]["step_fractions"]),
            tolerances=tolerances,
            improvement_threshold=data.get("improvement_reporting", {}).get(
                "threshold", 0.2
            ),
        )

    def update(self, path: Path):
        """Load baseline configuration from JSON file."""
        with path.open("r", encoding="utf-8") as fh:
            data = json.load(fh)

        scenarios_new = {}
        for name, cfg in data["scenarios"].items():
            scenarios_new[name] = ScenarioConfig(
                stages_ms=cfg["stages_ms"],
                denoise_step_ms={int(k): v for k, v in cfg["denoise_step_ms"].items()},
                expected_e2e_ms=float(cfg["expected_e2e_ms"]),
                expected_avg_denoise_ms=float(cfg["expected_avg_denoise_ms"]),
                expected_median_denoise_ms=float(cfg["expected_median_denoise_ms"]),
                estimated_full_test_time_s=cfg.get("estimated_full_test_time_s"),
            )

        self.scenarios.update(scenarios_new)
        return self


@dataclass
class DiffusionServerArgs:
    """Configuration for a single model/scenario test case."""

    model_path: str  # HF repo or local path
    modality: str | None = None  # auto-inferred: "image", "video", "3d", or "action"

    custom_validator: str | None = None  # auto-derived unless explicitly overridden
    # resources
    num_gpus: int = 1
    tp_size: int | None = None
    ulysses_degree: int | None = None
    ring_degree: int | None = None
    cfg_parallel: bool | None = None
    # LoRA
    lora_path: str | None = (
        None  # LoRA adapter path (HF repo or local path, loaded at startup)
    )
    dynamic_lora_path: str | None = (
        None  # LoRA path for dynamic loading test (loaded via set_lora after startup)
    )
    second_lora_path: str | None = (
        None  # Second LoRA adapter path for multi-LoRA testing
    )

    dit_layerwise_offload: bool = False
    dit_offload_prefetch_size: int | float | None = None
    enable_cache_dit: bool = False
    text_encoder_cpu_offload: bool = False

    extras: list[str] = field(default_factory=lambda: [])
    env_vars: dict[str, str] = field(default_factory=dict)

    def __post_init__(self):
        if self.modality is None:
            self.modality = _infer_modality_from_model_path(self.model_path)

        if self.custom_validator is not None:
            return

        if self.modality == "image":
            self.custom_validator = "image"
        elif self.modality == "video":
            self.custom_validator = "video"
        elif self.modality == "3d":
            self.custom_validator = "mesh"
        elif self.modality == "action":
            self.custom_validator = "action"


@lru_cache(maxsize=None)
def _infer_modality_from_model_path(model_path: str) -> str:
    model_info = get_model_info(model_path)
    if model_info is None:
        raise ValueError(f"Could not resolve model info for {model_path!r}")

    task_type = model_info.pipeline_config_cls.task_type
    if task_type == ModelTaskType.I2M:
        return "3d"
    if task_type.is_action_gen():
        return "action"
    if task_type.is_image_gen():
        return "image"
    return "video"


@dataclass(frozen=True)
class DiffusionSamplingParams:
    """Configuration for a single model/scenario test case."""

    output_size: str = ""

    # inputs and conditioning
    prompt: str | None = None  # text prompt for generation
    image_path: Path | str | None = None  # input image/video for editing (Path or URL)

    # duration
    seconds: int = 1  # for video: duration in seconds
    num_frames: int | None = None  # for video: number of frames
    fps: int | None = None  # for video: frames per second

    # URL direct test flag - if True, don't pre-download URL images
    direct_url_test: bool = False

    # output format
    output_format: str | None = None  # "png", "jpeg", "mp4", etc.

    num_outputs_per_prompt: int = 1

    # Realtime video consistency harness. When set, server tests use
    # /v1/realtime_video/generate and fold streamed chunks back into mp4 bytes.
    realtime_num_chunks: int | None = None
    realtime_events: list[dict[str, Any]] = field(default_factory=list)
    realtime_perf_thresholds: dict[str, float] = field(default_factory=dict)
    realtime_perf_ignore_initial_chunks: int = 0
    # None keeps the lossless/raw transport used by GT-backed consistency checks.
    realtime_output_format: str | None = None

    # Additional request-level parameters (e.g. enable_teacache, enable_upscaling, …)
    # merged directly into the OpenAI extra_body dict.
    extras: dict = field(default_factory=dict)


@dataclass(frozen=True)
class DiffusionTestCase:
    """Configuration for a single model/scenario test case."""

    id: str  # pytest test id and scenario name
    server_args: DiffusionServerArgs
    sampling_params: DiffusionSamplingParams | None = None
    run_perf_check: bool = True
    run_consistency_check: bool = True
    run_component_accuracy_check: bool = True
    run_models_api_check: bool = True
    run_t2v_input_reference_check: bool = True
    run_lora_basic_api_check: bool = False
    run_lora_dynamic_load_check: bool = False
    run_lora_dynamic_switch_check: bool = False
    run_multi_lora_api_check: bool = False

    def __post_init__(self) -> None:
        if self.sampling_params is None:
            object.__setattr__(
                self,
                "sampling_params",
                get_default_sampling_params_for_server_args(self.server_args),
            )

        has_startup_lora = self.server_args.lora_path is not None
        has_dynamic_lora = self.server_args.dynamic_lora_path is not None
        has_second_lora = self.server_args.second_lora_path is not None

        if self.run_lora_basic_api_check and not (has_startup_lora or has_dynamic_lora):
            raise ValueError(
                f"{self.id}: run_lora_basic_api_check requires lora_path or dynamic_lora_path"
            )

        if self.run_lora_dynamic_load_check and not has_dynamic_lora:
            raise ValueError(
                f"{self.id}: run_lora_dynamic_load_check requires dynamic_lora_path"
            )

        if self.run_lora_dynamic_switch_check and not has_second_lora:
            raise ValueError(
                f"{self.id}: run_lora_dynamic_switch_check requires second_lora_path"
            )

        if self.run_multi_lora_api_check and not (has_startup_lora and has_second_lora):
            raise ValueError(
                f"{self.id}: run_multi_lora_api_check requires lora_path and second_lora_path"
            )


_REALTIME_MODEL_COMMON_EXTRAS = {
    "seed": 42,
    "num_inference_steps": 4,
    "guidance_scale": 1.0,
}

REALTIME_MODEL_sampling_params = DiffusionSamplingParams(
    prompt=(
        "A slow aerial orbit around a pastel floating island hotel in the open "
        "ocean, hazy sunlight, turquoise water, toy-like architectural detail, "
        "clean horizon, cinematic but playful."
    ),
    image_path=(
        "https://is1-ssl.mzstatic.com/image/thumb/Music/v4/b8/f9/b9/"
        "b8f9b9f8-a609-bde2-0302-349436ffc508/825646291038.jpg/600x600bb.jpg"
    ),
    output_size="832x480",
    num_frames=9,
    fps=16,
    realtime_num_chunks=4,
    realtime_perf_thresholds={
        "p95_chunk_total_ms": 5000.0,
        "p95_scheduler_forward_ms": 4500.0,
        "p95_ws_payload_mb": 16.0,
    },
    realtime_perf_ignore_initial_chunks=2,
    extras={
        **_REALTIME_MODEL_COMMON_EXTRAS,
        "realtime_causal_sink_size": 9,
        "realtime_causal_kv_cache_num_frames": 18,
        "condition_inputs": {
            "camera_actions": [
                ["w"],
                ["w"],
                ["w"],
                ["w"],
                ["w"],
                ["w"],
                [],
                [],
                [],
                [],
                [],
                [],
            ]
        },
    },
)


PI05_ACTION_CI_sampling_params = DiffusionSamplingParams(
    prompt="pick up the blue block",
    extras={
        "action_horizon": 50,
        "action_dim": 32,
        "state_dim": 14,
        "image_size": 64,
        "num_inference_steps": 2,
        "seed": 0,
        "enable_prefix_cache": False,
        "enable_cuda_graph": True,
        "action_max_abs_diff_threshold": 0.05,
        "action_mean_abs_diff_threshold": 0.005,
    },
)


def sample_step_indices(
    step_map: dict[int, float], fractions: Sequence[float]
) -> list[int]:
    if not step_map:
        return []
    max_idx = max(step_map.keys())
    indices = set()
    for fraction in fractions:
        idx = min(max_idx, max(0, int(round(fraction * max_idx))))
        if idx in step_map:
            indices.add(idx)
    return sorted(indices)


@dataclass
class PerformanceSummary:
    """Summary of performance of a request, built from RequestPerfRecord"""

    e2e_ms: float
    avg_denoise_ms: float
    median_denoise_ms: float
    # { "stage_1": time_1, "stage_2": time_2 }
    stage_metrics: dict[str, float]
    step_metrics: list[float]
    sampled_steps: dict[int, float]
    all_denoise_steps: dict[int, float]
    frames_per_second: float | None = None
    total_frames: int | None = None
    avg_frame_time_ms: float | None = None

    @staticmethod
    def from_req_perf_record(
        record: RequestPerfRecord, step_fractions: Sequence[float]
    ):
        """Collect all performance metrics into a summary without validation."""
        e2e_ms = record.total_duration_ms

        step_durations = record.steps
        avg_denoise = 0.0
        median_denoise = 0.0
        if step_durations:
            avg_denoise = sum(step_durations) / len(step_durations)
            median_denoise = statistics.median(step_durations)

        per_step = {index: s for index, s in enumerate(step_durations)}
        sample_indices = sample_step_indices(per_step, step_fractions)
        sampled_steps = {idx: per_step[idx] for idx in sample_indices}

        # convert from list to dict
        stage_metrics = {}
        for item in record.stages:
            if isinstance(item, dict) and "name" in item:
                val = item.get("execution_time_ms", 0.0)
                stage_metrics[item["name"]] = val

        return PerformanceSummary(
            e2e_ms=e2e_ms,
            avg_denoise_ms=avg_denoise,
            median_denoise_ms=median_denoise,
            stage_metrics=stage_metrics,
            step_metrics=step_durations,
            sampled_steps=sampled_steps,
            all_denoise_steps=per_step,
        )


T2I_sampling_params = DiffusionSamplingParams(
    prompt="Doraemon is eating dorayaki",
    output_size="1024x1024",
)

IDEOGRAM4_CI_TEXT_PROMPT = "A cat sitting on a bench"

IDEOGRAM4_CI_PROMPT = json.dumps(
    {
        "high_level_description": IDEOGRAM4_CI_TEXT_PROMPT,
        "style_description": {
            "aesthetics": "warm, peaceful, vibrant",
            "lighting": "bright afternoon sunlight, long soft shadows",
            "photo": "shallow depth of field, eye-level, 85mm lens",
            "medium": "photograph",
            "color_palette": [
                "#F5C542",
                "#87CEEB",
                "#4A4A4A",
                "#FFFFFF",
                "#2E8B57",
            ],
        },
        "compositional_deconstruction": {
            "background": (
                "A sunlit garden path with green hedges and a wooden bench. "
                "Dappled light filters through overhead trees."
            ),
            "elements": [
                {
                    "type": "obj",
                    "bbox": [260, 260, 760, 780],
                    "desc": (
                        "A small tabby cat sitting calmly on a wooden bench, "
                        "looking toward the camera."
                    ),
                },
                {
                    "type": "obj",
                    "bbox": [180, 580, 840, 840],
                    "desc": (
                        "A weathered wooden garden bench with soft sunlight "
                        "falling across the seat."
                    ),
                },
            ],
        },
    },
    separators=(",", ":"),
    ensure_ascii=False,
)

COSMOS3_NANO_CI_sampling_params = DiffusionSamplingParams(
    prompt="A red cube on a white table, product photo.",
    output_size="832x480",
    output_format="png",
    extras={
        "num_inference_steps": 35,
        "seed": 0,
        "max_sequence_length": 128,
        "extra_args": {
            "guardrails": False,
            "use_resolution_template": False,
        },
    },
)

IDEOGRAM4_CI_sampling_params = replace(
    T2I_sampling_params,
    prompt=IDEOGRAM4_CI_PROMPT,
    output_size="1024x1024",
    output_format="png",
    extras={"preset": "V4_QUALITY_48", "seed": 0},
)

MODELOPT_T2I_CI_sampling_params = DiffusionSamplingParams(
    prompt="Doraemon is eating dorayaki",
    output_size="768x768",
    extras={"num_inference_steps": 12, "seed": 0},
)

MODELOPT_QWEN_IMAGE_2512_NVFP4_CI_sampling_params = replace(
    MODELOPT_T2I_CI_sampling_params,
    extras={"num_inference_steps": 50, "seed": 0},
)

MODELOPT_TI2I_CI_sampling_params = DiffusionSamplingParams(
    prompt="Convert 2D style to 3D style",
    image_path="https://github.com/lm-sys/lm-sys.github.io/releases/download/test/TI2I_Qwen_Image_Edit_Input.jpg",
    output_size="512x512",
    extras={"num_inference_steps": 8, "seed": 0},
)

TI2I_sampling_params = DiffusionSamplingParams(
    prompt="Convert 2D style to 3D style",
    image_path="https://github.com/lm-sys/lm-sys.github.io/releases/download/test/TI2I_Qwen_Image_Edit_Input.jpg",
)

MULTI_IMAGE_TI2I_sampling_params = DiffusionSamplingParams(
    prompt="The magician bear is on the left, the alchemist bear is on the right, facing each other in the central park square.",
    image_path=[
        "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-Image/edit2509/edit2509_1.jpg",
        "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-Image/edit2509/edit2509_2.jpg",
    ],
    direct_url_test=True,
)
MULTI_IMAGE_TI2I_UPLOAD_sampling_params = DiffusionSamplingParams(
    prompt="The magician bear is on the left, the alchemist bear is on the right, facing each other in the central park square.",
    image_path=[
        "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-Image/edit2509/edit2509_1.jpg",
        "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-Image/edit2509/edit2509_2.jpg",
    ],
)
MULTI_FRAME_I2I_sampling_params = DiffusionSamplingParams(
    prompt="a high quality, cute halloween themed illustration, consistent style and lighting",
    image_path=[
        "https://raw.githubusercontent.com/QwenLM/Qwen-Image-Layered/main/assets/test_images/4.png"
    ],
    num_frames=4,
    direct_url_test=True,
    output_format="png",
)

T2V_PROMPT = "A curious raccoon"

T2V_sampling_params = DiffusionSamplingParams(
    prompt=T2V_PROMPT,
)

JOY_ECHO_T2V_CI_sampling_params = DiffusionSamplingParams(
    prompt=T2V_PROMPT,
    output_size="640x384",
    num_frames=33,
    extras={
        "num_inference_steps": 8,
        "seed": 42,
        "enable_memory_bank": False,
    },
)

MODELOPT_T2V_CI_sampling_params = DiffusionSamplingParams(
    prompt=T2V_PROMPT,
    output_size="640x384",
    seconds=5,
    num_frames=17,
    extras={"num_inference_steps": 12, "seed": 0},
)

LINGBOT_VIDEO_T2V_CI_PROMPT = json.dumps(
    {
        "comprehensive_description": {
            "scene_content_description": (
                "A small silver robot arm on a white table slowly reaches "
                "toward a red cube. The background is a plain, softly lit "
                "laboratory wall."
            ),
            "camera_movement_description": (
                "The camera is static at eye level, medium shot, with the "
                "robot arm centered and in sharp focus."
            ),
        },
        "camera_info": {
            "color": "Neutral",
            "frame_size": "Medium",
            "shot_type_angle": "Eye level",
            "lens_size": "Medium",
            "composition": "Center",
            "lighting": "Soft light",
            "lighting_type": "Artificial light",
        },
        "world_knowledge": [],
        "prominent_elements": [
            {
                "name": "robot arm",
                "description": "A small silver robot arm with a two-finger gripper.",
                "actions": [
                    {
                        "timestamp": "[0.0s - 1.0s]",
                        "action": "reaches toward the red cube",
                    }
                ],
                "location": "center of the frame",
                "relative_size": "dominant",
                "shape_and_color": "articulated silver metal arm",
                "texture": "brushed metal",
                "appearance_details": "two-finger gripper, visible joints",
                "relationship": "reaching toward the red cube on the table",
                "orientation": "upright, base on the table",
                "pose": "reaching",
                "expression": "",
                "clothing": "",
                "gender": "",
                "skin_tone_and_texture": "",
            }
        ],
    },
    separators=(",", ":"),
)

LINGBOT_VIDEO_T2V_CI_sampling_params = DiffusionSamplingParams(
    prompt=LINGBOT_VIDEO_T2V_CI_PROMPT,
    output_size="384x640",
    num_frames=17,
    fps=16,
    extras={"num_inference_steps": 12, "seed": 0},
)

TI2V_sampling_params = DiffusionSamplingParams(
    prompt="The man in the picture slowly turns his head, his expression enigmatic and otherworldly. The camera performs a slow, cinematic dolly out, focusing on his face. Moody lighting, neon signs glowing in the background, shallow depth of field.",
    image_path="https://is1-ssl.mzstatic.com/image/thumb/Music114/v4/5f/fa/56/5ffa56c2-ea1f-7a17-6bad-192ff9b6476d/825646124206.jpg/600x600bb.jpg",
    direct_url_test=True,
)

SANA_WM_TI2V_CI_sampling_params = DiffusionSamplingParams(
    prompt=TI2V_sampling_params.prompt,
    image_path=TI2V_sampling_params.image_path,
    direct_url_test=True,
    output_size="384x640",
    num_frames=17,
    extras={"num_inference_steps": 12, "seed": 0, "guidance_scale": 4.5},
)

LONGLIVE2_T2V_CI_sampling_params = replace(
    REALTIME_MODEL_sampling_params,
    image_path=None,
    num_frames=61,
    realtime_num_chunks=None,
    realtime_events=[],
    realtime_perf_thresholds={},
    realtime_perf_ignore_initial_chunks=0,
    extras=dict(_REALTIME_MODEL_COMMON_EXTRAS),
)

LONGLIVE2_I2V_CI_sampling_params = replace(
    REALTIME_MODEL_sampling_params,
    output_size="960x928",
    num_frames=61,
    realtime_num_chunks=None,
    realtime_events=[],
    realtime_perf_thresholds={},
    realtime_perf_ignore_initial_chunks=0,
    extras=dict(_REALTIME_MODEL_COMMON_EXTRAS),
)

TURBOWAN_I2V_sampling_params = DiffusionSamplingParams(
    prompt="The man in the picture slowly turns his head, his expression enigmatic and otherworldly. The camera performs a slow, cinematic dolly out, focusing on his face. Moody lighting, neon signs glowing in the background, shallow depth of field.",
    image_path="https://is1-ssl.mzstatic.com/image/thumb/Music114/v4/5f/fa/56/5ffa56c2-ea1f-7a17-6bad-192ff9b6476d/825646124206.jpg/600x600bb.jpg",
    direct_url_test=True,
    output_size="960x960",
    num_frames=4,
    fps=4,
)

HUNYUAN3D_SHAPE_sampling_params = DiffusionSamplingParams(
    prompt="",
    image_path="https://raw.githubusercontent.com/sgl-project/sgl-test-files/main/diffusion-ci/consistency_gt/1-gpu/hunyuan3d_2_0/hunyuan3d.png",
)


def _get_extra_arg_value(extras: Sequence[str], option_name: str) -> str | None:
    tokens: list[str] = []
    for item in extras:
        tokens.extend(shlex.split(item))

    option_prefix = f"{option_name}="
    for index, token in enumerate(tokens):
        if token.startswith(option_prefix):
            return token[len(option_prefix) :]
        if token == option_name and index + 1 < len(tokens):
            return tokens[index + 1]
    return None


def get_model_task_type_for_server_args(
    server_args: DiffusionServerArgs,
) -> ModelTaskType:
    pipeline_class_name = _get_extra_arg_value(
        server_args.extras, "--pipeline-class-name"
    )
    if pipeline_class_name:
        config_classes = get_pipeline_config_classes(pipeline_class_name)
        if config_classes is not None:
            pipeline_config_cls, _ = config_classes
            return pipeline_config_cls.task_type

    model_info = get_model_info(server_args.model_path)
    if model_info is None:
        raise ValueError(f"Could not resolve model info for {server_args.model_path!r}")
    return model_info.pipeline_config_cls.task_type


def get_default_sampling_params_for_model_task(
    task_type: ModelTaskType,
) -> DiffusionSamplingParams:
    if task_type == ModelTaskType.T2I:
        return T2I_sampling_params
    if task_type in (ModelTaskType.I2I, ModelTaskType.TI2I):
        return TI2I_sampling_params
    if task_type == ModelTaskType.T2V:
        return T2V_sampling_params
    if task_type in (ModelTaskType.I2V, ModelTaskType.TI2V):
        return TI2V_sampling_params
    if task_type == ModelTaskType.I2M:
        return HUNYUAN3D_SHAPE_sampling_params
    if task_type.is_action_gen():
        return PI05_ACTION_CI_sampling_params
    raise ValueError(f"No default sampling params for model task {task_type!r}")


def get_default_sampling_params_for_server_args(
    server_args: DiffusionServerArgs,
) -> DiffusionSamplingParams:
    task_type = get_model_task_type_for_server_args(server_args)
    return get_default_sampling_params_for_model_task(task_type)


MODELOPT_FLUX1_FP8_TRANSFORMER = "lmsys/flux1-dev-modelopt-fp8-sglang-transformer"
MODELOPT_FLUX2_FP8_TRANSFORMER = "lmsys/flux2-dev-modelopt-fp8-sglang-transformer"
MODELOPT_WAN22_FP8_MODEL = "nvidia/Wan2.2-T2V-A14B-Diffusers-FP8"
MODELOPT_HUNYUANVIDEO_FP8_TRANSFORMER = (
    "lmsys/hunyuanvideo-modelopt-fp8-sglang-transformer"
)
MODELOPT_QWEN_IMAGE_FP8_TRANSFORMER = "lmsys/qwen-image-modelopt-fp8-sglang-transformer"
MODELOPT_QWEN_IMAGE_EDIT_FP8_TRANSFORMER = (
    "lmsys/qwen-image-edit-modelopt-fp8-sglang-transformer"
)
MODELOPT_FLUX1_NVFP4_TRANSFORMER = "lmsys/flux1-dev-modelopt-nvfp4-sglang-transformer"
MODELOPT_FLUX2_NVFP4_WEIGHTS = "black-forest-labs/FLUX.2-dev-NVFP4"
MODELOPT_QWEN_IMAGE_2512_NVFP4_MODEL = "lmsys/qwen-image-2512-modelopt-nvfp4-sglang"
MODELOPT_WAN22_NVFP4_MODEL = "nvidia/Wan2.2-T2V-A14B-Diffusers-NVFP4"
MODELOPT_NVFP4_B200_ENV_VARS = {}
MODELOPT_WAN22_NVFP4_B200_ENV_VARS = {}

PERF_BASELINE_PLATFORM_ENV = "SGLANG_DIFFUSION_PERF_BASELINE_PLATFORM"
PERF_BASELINE_DIR = Path(__file__).with_name("perf_baselines")
PERF_BASELINE_FILE_BY_PLATFORM = {
    "h100": "h100.json",
    "b200": "b200.json",
    "5090": "5090.json",
}
PERF_BASELINE_PLATFORM_ALIASES = {
    "sm90": "h100",
    "hopper": "h100",
    "h100": "h100",
    "sm100": "b200",
    "blackwell": "b200",
    "b200": "b200",
    "sm120": "5090",
    "rtx5090": "5090",
    "5090": "5090",
}


def _normalize_perf_baseline_platform(platform: str) -> str:
    normalized = platform.strip().lower().replace("_", "-")
    normalized = normalized.replace("-", "")
    if normalized not in PERF_BASELINE_PLATFORM_ALIASES:
        valid = ", ".join(sorted(PERF_BASELINE_FILE_BY_PLATFORM))
        raise ValueError(
            f"Invalid diffusion perf baseline platform {platform!r}. "
            f"Expected one of: {valid}"
        )
    return PERF_BASELINE_PLATFORM_ALIASES[normalized]


def get_perf_baseline_platform() -> str:
    override = os.getenv(PERF_BASELINE_PLATFORM_ENV)
    if override:
        return _normalize_perf_baseline_platform(override)
    if current_platform.is_sm120():
        return "5090"
    if current_platform.is_blackwell():
        return "b200"
    return "h100"


def get_perf_baseline_path(platform: str | None = None) -> Path:
    baseline_platform = (
        _normalize_perf_baseline_platform(platform)
        if platform is not None
        else get_perf_baseline_platform()
    )
    return PERF_BASELINE_DIR / PERF_BASELINE_FILE_BY_PLATFORM[baseline_platform]


def _make_modelopt_ci_case(
    case_id: str,
    *,
    model_path: str,
    modality: str,
    sampling_params: DiffusionSamplingParams,
    extras: list[str],
    env_vars: dict[str, str] | None = None,
    run_consistency_check: bool = False,
) -> DiffusionTestCase:
    return DiffusionTestCase(
        case_id,
        DiffusionServerArgs(
            model_path=model_path,
            modality=modality,
            extras=extras,
            env_vars=env_vars or {},
        ),
        sampling_params,
        run_perf_check=False,
        run_consistency_check=run_consistency_check,
        run_component_accuracy_check=False,
    )


def _with_default_num_gpus(
    cases: list[DiffusionTestCase], num_gpus: int
) -> list[DiffusionTestCase]:
    return [
        replace(case, server_args=replace(case.server_args, num_gpus=num_gpus))
        for case in cases
    ]


# Load global configuration
BASELINE_CONFIG = (
    BaselineConfig.load(get_perf_baseline_path())
    .update(Path(__file__).parent / "ascend" / "perf_baselines_npu.json")
    .update(Path(__file__).parent / "musa" / "perf_baselines_musa.json")
)
